encode newPassword *properly* in the password reset form

[penguinite]

This commit fixes #374 by calling encodeUrl from std/uri on the password before sending the request. In my own testing, I was able to use pretty much every problematic character from the issue report, but I think this should be tested more by different people. (I can't believe it was this simple to fix, surely there's a catch...)

This fix is not the most ideal one, it would be best if someone re-wrote the code to submit the new password using multipart, I tried writing this fix but I got mysterious errors and gave up.

[penguinite]

"(stable, stable)" fails due to it not being able to load libpcre.so
"(stable, devel)" fails for some mysterious reason (package management issues?)

[PMunch]

This is great, sometimes bugs are easy to fix just because no-one has tried yet :) In any case this is better than the current code so I'd say it's good to merge.